You are reading our best questions and answers in the Who discovered category
Indium is a chemical element represented by the symbol In and the atomic number 49. It is a soft metal with bright silvery-white coloration. It is the 61st most common element in the crust of the Earth and less than 10 minerals are known to contain the metal. It is commonly obtained commercially from the residues left over during zinc ore processing, although a similar method can be used in lead, tin, copper and iron mining as well. Some of the largest deposits of the metal are found in Canada and Bolivia. Indium shares chemical similarities with gallium and thallium and this led to its discovery.
Tuberculosis is an infectious disease caused by a variety of strains of mycobacteria, most commonly Mycobacterium tuberculosis. In about 90% of cases the disease causes no symptoms and remains inactive. However, in 10% of cases the disease becomes active and can cause a variety of symptoms. The disease most commonly attacks the lungs and causes a long lasting cough sometimes with bloody mucus, fever and weight loss. The disease is usually diagnosed with a chest x-rays and treated with long term antibiotics. Unfortunately, the bacteria that cause tuberculosis are difficult to kill and have become resistant to the drugs. It is estimated that about a third of the people on Earth have been, or are, infected by mycobacteria known to cause tuberculosis. Let’s find out who discovered this serious disease.
Tutankhamun, also known as “King Tut”, was an Egyptian pharaoh who ruled from about 1332-1323 B.C. during the 18th Dynasty of ancient Egypt. He was a young leader and became pharaoh at just 9 or 10 years of age and ruled until he died approximately 10 years later. Although Tutankhamun wasn’t one of the most important leaders in the history of Egypt he became the world’s best known pharaoh after his tomb was discovered in a well preserved state. This discovery led to a worldwide interest in ancient Egypt that continues to this day. Let’s find out who made this important archaeological discovery.
Niobium is a soft gray metal and a chemical element represented by the symbol Nb with the atomic number 41. The free metal does not occur in nature, but it can be found in certain minerals such as columbite and pyrochlore. The largest deposits of niobium containing minerals are found in Brazil and Canada and these two countries continue to produce the majority of the element for the world. Niobium is chemically similar to the element tantalum, which meant that its discovery was the subject of much debate.
Troy was an ancient city located in modern day Turkey. It was once thought to be a fictional city based on stories from Greek mythology. The city is probably best known as the setting of the Trojan War, which is one of the most important events in Greek mythology. However, some people believed that the city actually existed and many attempted to find the location and prove that the legendary city of Troy was real.
Jamaica is an island nation located in the Caribbean Sea. It is located to the south of Cuba and to the west of Haiti. It was once a Spanish territory, but was taken over by the English in 1655. Eventually it became a British colony known as Jamaica, from the native Taíno inhabitants name for the island “Xaymaca.” Jamaica achieved independence from the United Kingdom in 1962, although the country is still a part of the Commonwealth of Nations and the Queen remains the current head of state.
Ruthenium is a chemical element that is represented by the chemical symbol Ru and the atomic number 44. It is a rare metal that is most commonly found as a minor component of platinum ores. It is inert (not chemically reactive) with most chemicals and this property makes it important for a variety of niche uses. It is one of the rarest elements on Earth and it is estimated that there are only 5,000 tonnes on the planet. If you have ever wanted to know who discovered ruthenium, keep reading to find out.
Technetium is a chemical element that is represented by the chemical symbol Tc and the atomic number 43. There are no stable isotopes of technetium, which means that every known form is radioactive, and it is the first element on the periodic table with this property. The only naturally occurring technetium comes from spontaneous fission in uranium ores or neutron capture in molybdenum ores. Let’s find out when this radioactive silvery-gray metal was first discovered.
The Cape of Good Hope, sometimes known simply as the Cape, is the rocky headland located on the south western coast of South Africa. It is commonly thought to be the most southern point of the African continent, but that is actually Cape Agulhas about 150 km (90mi) to the east. However, the Cape of Good Hope became the most well known cape in the area because it is the point when ships from Europe could begin traveling in a more easterly direction. This discovery led to the opening of a sea route from Europe to India and the Far East. It was considered to be one of the most important discoveries of the time. If you have ever wondered who was the first person on record to discover this location, keep reading to find out.
Rubidium is a very soft, and highly reactive, silvery white metal. It is a chemical element with an atomic mass of 85.4678 and is represented by the chemical symbol Rb and the atomic number 37. It is the 23rd most common element in the crust of the Earth, but it is not widely mined because it has limited uses. Due to the fact that rubidium is highly reactive the pure metal must be stored in a dry mineral oil or in a container with an inert atmosphere. Continue reading if you want to know who discovered this abundant element.